public class Login {
    public void userLogin(){

        int a=0,b=1,c=2;
        System.out.println("是否登录？");
        if (b != a){
            System.out.println("用户登录");
        }

        System.out.println("您是第" + b + "个登录的用户");
    }

    public static void main(String[] args) {
        new Login().userLogin();
    }
}
